#!/usr/bin/env python3

# rsync.py - robust rsync operations
#
# Copyright (c) 2019-2020 Fpemud <fpemud@sina.com>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.


import time
import subprocess
from . import TIMEOUT, RETRY_WAIT
from ._util import Util, ProcessStuckError


def exec(*args):
    while True:
        try:
            Util.cmdListExec(["/usr/bin/rsync", "--timeout=%d" % (TIMEOUT)] + list(args))
            break
        except ProcessStuckError:
            time.sleep(RETRY_WAIT)
        except subprocess.CalledProcessError as e:
            if e.returncode > 128:
                raise                    # terminated by signal, no retry needed
            time.sleep(RETRY_WAIT)


class PrivateUrlNotExistError(Exception):
    pass
